@media screen, projection
{
  #col1_content { margin:  0 5px; padding: 0 }
  #col2_content { margin:  0 5px; padding: 0 }
  #col3_content { margin:  0 5px; padding: 0 }

  #col1 {background: #fee }
  #col1_content {background: #edd }
  #col2 {background: #efe }
  #col2_content {background: #ded }
  #col3 {background: #eef }
  #col3_content {background: #dde }
  #main {background: #fff }

}
